How to Set Up a CI Pipeline for Ktor Using GitHub Actions?

In this article, we'll look at how to use GitHub Actions to create a robust and effective Continuous Integration (CI) pipeline for Ktor applications. Developers have a great foundation to construct high-performance server-side apps thanks to Ktor, a versatile and lightweight Kotlin framework for building web applications. We can automate the build, test, and deployment procedures by integrating GitHub Actions, resulting in the timely and error-free delivery of Ktor projects. Let's get started with the detailed instructions for setting up a CI pipeline that will speed up development and improve teamwork on Ktor projects.

What is CI/CD?

CI/CD, also known as continuous Integration and Continuous Deployment, is a method of software development that automates the deployment of code to testing or production environments by first automating the process of merging code updates from many developers into a shared repository (Continuous Integration).

Why is CI/CD Important for Android?

Android development requires CI/CD for the following reasons:

• By automating the building, testing, and deployment processes, instant feedback and shorter development cycles are made possible.
• Higher code quality is ensured through automated testing, which also lowers the likelihood of errors and problems.
• Collaboration that runs smoothly reduces disputes and integration problems by allowing developers to easily incorporate code changes.
• CI/CD allows for continuous deployment, ensuring users get the latest features and updates promptly.

Benefits Of Using GitHub Actions For CI/CD

GitHub Actions offers significant benefits for CI/CD:

• Native Integration: Seamlessly integrated into GitHub repositories, with no need for external tools.
• Workflow Automation: Automate build, test, and deployment processes for quicker development cycles.
• Diverse Ecosystem: A wide range of pre-built actions is available to customize workflows easily.
• Scalability: Supports workflows for various languages, platforms, and environments.
• Version Control:CI/CD configurations are stored in the repository, ensuring versioning and traceability.

Steps To Build CI/CD Pipeline for Ktor using GitHub actions.

• First things first, once you've built a server using Ktor, deploy it on GitHub so that we can use GitHub Actions to build a CI pipeline for the same.
• Now, after you've pushed your project on GitHub, on the main home screen of your project, click on Add file > Create new file.👁 GitHub
  
• As GitHub Actions finds the workflow file in a specific directory, we need to create a directory inside which we'll add our CI Workflow file. So start typing the name as .github/workflows/ci-ktor.yml. All the YAML files are extended with the extension .yml.

• Once you have written the name of the file, write the below code in this file.

# Define the name of the CI pipeline

name: Ktor CI Pipeline

# Specify the events that trigger the CI pipeline: push to master branch and pull requests targeting master

on:

push:

branches:

- master

pull_request:

branches:

- master

# Define the jobs to be executed in the CI pipeline

jobs:

# Job for building the Ktor application

build:

runs-on: ubuntu-latest # Use the latest Ubuntu environment for this job

steps:

- uses: actions/checkout@v2 # Check out the repository code

- name: Setup Java # Use the actions/setup-java action to set up Java

uses: actions/setup-java@v2

with:

java-version: '11' # Set up JDK 11

distribution: 'adopt' # Use the AdoptOpenJDK distribution

- name: Make gradlew executable # Make the Gradle wrapper script executable

run: chmod +x ./gradlew # Add this line to make gradlew executable

- name: Build Ktor application # Run the Gradle task to build the Ktor application

run: ./gradlew assemble

# Job for testing the Ktor application

test:

runs-on: ubuntu-latest # Use the latest Ubuntu environment for this job

steps:

- uses: actions/checkout@v2 # Check out the repository code

- name: Setup Java # Use the actions/setup-java action to set up Java

uses: actions/setup-java@v2

with:

java-version: '11' # Set up JDK 11

distribution: 'adopt' # Use the AdoptOpenJDK distribution

- name: Make gradlew executable # Make the Gradle wrapper script executable

run: chmod +x ./gradlew

- name: Run Ktor tests # Run the Gradle task to execute Ktor tests

run: ./gradlew test

• Once you've written this code in the .yml file, hit commit and add a meaningful message for the commit.
• Now, once committing is done, go to the home page of your project of GitHub and click on Actions.
• You'll see a workflow running over there, this means when we committed our file to the master branch, this workflow got triggered and started running the Jobs mentioned in the .yml file.

• Wait for some time, and you'll see the workflow getting completed successfully. This means our CI Pipeline is ready.

In this way, we successfully build a CI Pipeline using GitHub Actions for Ktor.Now as we know what a CI pipeline is and how we can build it for Ktor, we should also know what CD (Continuous Deployment) is.Continuous Delivery (CD) pipelines have become an essential tool in the world of contemporary software development, where speed and effectiveness are key factors. CD pipelines concentrate on automating the deployment process, ensuring that software changes are rapidly and reliably delivered to production environments. They build on the principles of Continuous Integration (CI).

What is Continuous Delivery (CD)?

The focus of the continuous delivery approach to software engineering is on an automated and smooth release procedure. The objective is to offer development teams the confidence they need to confidently release software updates to production at any time. This entails automating a number of software delivery process steps, such as application construction, testing, and deployment. CD pipelines make it easier to deploy software quickly and consistently while lowering the chance of human error and the need for manual intervention.

Important Parts Of A CD Pipeline

• The Source Code Management (SCM) pipeline's cornerstone is SCM. Teams can work together, keep track of changes, and manage various software versions thanks to the storage of the source code in a version control system like Git.
• Comprehensive automated testing is a critical component of CD. It includes several test kinds, including end-to-end tests, integration tests, and unit tests. Automated testing makes sure that modifications don't result in regressions or affect working functionality.
• Artefact management: An artefact repository is where build artefacts, such as built binaries and package files, are stored and managed. This guarantees consistent and traceable deployment artefacts.
• Automation of deployment: In this stage, the application is deployed to several environments, such as development, staging, and production.

This shows what actually CD is and what all are the advantages of building a CD pipeline for your applications.